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Mineralpedia Details for Dundasite

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Dundasite

Dundasite

Named after the type locality at the Adelaide mine in the Dundas mineral field of the Zeehan District of Tasmania, Australia. Dundasite is an uncommon mineral that forms in oxidized lead-bearing deposits. Additional localities for Dundasite include others in Australia, New Zealand, Wales, Ireland, England, Germany, Austria, Italy, Greece, France, Morocco, Namibia, and in the United States. Associated minerals include cerussite, plattnerite, azurite, malachite, pyromorphite, mimetite, beudantite, duftite, crocoite, gibbsite, allophone, and limonite.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/dundasite.pdf

Formula
PbAl2(CO3)2(OH)4┬ĚH2
Crystal System
Orthorhombic 
Crystal Habit
Radial, Acicular, Spherical 
Cleavage
Perfect, None, None 
Luster
Vitreous - Silky 
Color
sky blue, white, light green 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Hardness
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Dundasite from Ruakaka 2 level, Tui mine, Te Aroha, New Zealand

Dundasite
            from Ruakaka 2 level, Tui mine, Te Aroha, New Zealand

Snow white crystal sprays to 1mm.

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Dundasite from Adelaide mine, Dundas, Tasmania, Australia

Dundasite
            from Adelaide mine, Dundas, Tasmania, Australia

Snow white balls of Dundasite to 1mm on gossan matrix.

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Dundasite from Tsumeb mine, Tsumeb, Namibia

Dundasite
            from Tsumeb mine, Tsumeb, Namibia

A gorgeous rarity of green Conichalcite (EDS) spongy matrix with balls of white and blue Dundasite (EDS) colored blue by a slight content of Copper. The balls are about 1.5mm. Please reference Gebhard pg. 284.

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